Sheet-feeding device for printing-machines.



No. 819,362 PATENTED'MAY- 1, 1906.

, V G. KLEIM. SHEET FEEDING DEVICE FOR PRINTING MACHINES.

APPLiG-ATION FILED TA-1L5, 1905.

4 I E g 2 22 m.

" g SHEETS-SHEET 1. v

No. 819,852. PATENTED MAY 1, 1906.

G KLEIM. SHEET PEEDINQ DEVICE FOR PRINTING MACHINES.

APPLICATION FILED JAN. 5; 1905.

ZSHEBTS-FHBEI' Z.

UNITED STATES PATEN'1IOFEIQEIL GUSTAV KI QiJ IivL-OF LEIPSIC, GERMANY; sHEET-FEEDI GDEVICE FOR PRINTING-MACHINES.

Specification of Letters Patent.

Application filed ua y 5,190 5- Berial Ho. ZSQIiSF- :atentea may 1,1906.

To all whom it may concern:

Be it known that I, GUSTAV KLEIM, a citizen of the Empire of Germany, residing at .Leipsic, in the Empire-f Germany, have in-- vented a new and useful. Sheet-Feeding-Deraisin the uppermost sheet, but such suckturned to its initial ing-tu es failed to work satisfactorily for hi h-speedprintin -machines-. Iy invention redates to improvements in pneumatic sheet-feeding devices for printingmachines whereb moved; and the olijects' of my improvement are, first, to provide a rocking pneumatic frame attached by a hoseto an air-sucking device and having a plurality of sucking--- boxes adapted to suck the'uppermost sheet; second, to provide means for so moving the rocking pneumatic frame that its several.

sucking-boxes first touch the front edge of the uppermost sheet, then turn the same,

round their edges in the ,axis, afterward raise this sheet ed e and move the sheet through a part of t e path to the rintingcylinder, whereupon the sheet isal owed to drop and the rocking pneumatic frame is reposition; third,,to provide means for seizing the dropping sheet and moving it to the printing-cylinder, and, fourth, to provide means for gradually lower ing the bearings holding the trunnions of the rocking pneumatic-frame in proportion to the diminishing height of the pile of sheets. I attain these objects by the mechanism illustrated in a mode of execution in the accompanying drawings, in-which- Figure l'is a side view of a part of a printing-machine and the pneumatic sheet-feeding device attached thereto, the rockin pneumatic frame being shown in section an a part of the'front slide being 'broken away; Fig. 2 is' a fractionalfront view of the pile of sheets and of the rocking neumatic frame.

. Fig. 3 shows, on an enlarge scale, a side view of the same in-which three different positions of the rocking pneumatic frame are indicated by drawn and dotted lines. similar side view, the rocking pneumatic frame being modified. Fig, 5 is a detail which will be referred to later on. F igs. 6, 7, and 8 show three different positions of a sucking-box arranged toturn the front edge .of

these defects are re- Fig 4 shows a the uppermost sheet backward.- Figs.' 9, 10, and 11 showthree different positions of a modified sucking-box arranged to turn thefront edge of the uppermost sheet forward,

and Fig. 12 is a detail which will be referred to later" on.

imilar characters of reference refer to similar parts throughout the several views.

Which is' mounted to turn in suitable bearings; d is a shaft driven-in any known manner from the main shaft of the printing-machine and at the same rate as the printing-cylinder b. On this shaftd are keyed four grooved cam-disks 27 on both sides of the machines,

which are to actuate the four rods (0 se 2.

.I have shown in Fig. 1 only the'front camdisk 27 as provided with a groove 28., for the sake ofcle'arnessj but'the three other'cam disks, which are preferably behind the same, are. equally provided with grooves, the shapes of which can easily be ascertained by drafting when bearing in mind the kind of the motion which the groove is-required to transmit to therespective rod. The lower end of the red e is provided with a slot into which the.

shaft (1 engages, so as toguide the rod e. Immediately above the slotv the rode is provided with a pin on which a roller 29 is mounted to turn. This roller '29 engages in the groove 28, and it will now be evident that during the revolutionv of the shaft the roller ciprocated by their respective grooved camdisks 27.

, 9 29 is moved up and down b the groove'28'= l is. the table onwhich the pile k of sheets is placed. At the front edge of the table '1 two slides f are mounted on oth sides of the machine to move vertically in suitable guides (not shown) forming partsof the frame a;

Each slide f is'rigidly'connected with a horizont al arm 1'8 and is pivotally connected with the rod e, so that from the respective camdisks "27 the two slides f with the horizontal arms -18 are moved up and down, In eachslide f a vertical screw-spindle m is mounted to turn, which carries a beanng q, (see F1g;5,)

adapted to'slide vertically on the slidef. On

the upper ends of thetwo screw spindles m (see also Fig. 2) are keyed two bevel-wheels 19 which engage in the bevel-wheels 20 to turn on suitable pins.

keyed on a horizontal shaft 21. The latter is mounted to turn in suitable arms 30 of the two slides f and carries a friction-wheel n, fastened on it, and two loose arms 22, embracing the friction-wheel n. To the free ends of the arms 22 a lever 0 is pivotally connected, the end of which is formed asa friction-pawl to work with the periphery of the friction-wheel n. The other end of the lever'o is pivotally connected by a rod 0 'to the one of two horizontal rods p. At the rear ends of the two arms 18 two bell-crank levers r are mounted The vertical arms of these bell-crank levers are pivotally connected with the horizontal rods 1) already mentioned above, while their lower arms are pivotally connected with the rods 8. The right ends of the rods p in Fig. 1 are each provided with a slot '23, which is for the most part horizontal and on the left end curved downward. Into these slots 23 of the two rods 1) two pins 24 engage for guidim the rods The two pins 24 form the ends of two bent rods 31, (see Figs. 2 and 5,) screwed into the top faces of the two bearings g. On the lower surface the slotted ends of the rods p are provided with two downwardly-projecting arms 25 and 26 of unequal lengths, so as to form two forks.

The rocking pneumatic frame consists of a tube 32, made in one piece with several sucking-boxes ti; further, of two end pieces h, attached to the two ends of the tube 32; finally, of two trunnions g, secured in the two end pieces h. The one end piece h and the adoining' trunnion 9 (see Fi 2) are made hollow, and the latter is so co nected with a hose 34 by means of a con ling 33 that the whole puenmatic frame is al owed to rock through a con enient angle around the axis of the two trunnions g. Preferably this frame is balient place of the printing-machine.

' produces a vacuum anced by two counterweights 35. The bottoms of the several sucking-boxes i t are each rovided with several perforations 36 36, and the whole frame is so made that the several sucking-boxes i i communicate, by means of the tube 32, the hollow end piece it, and the hollow trunnion g, with the hose 34. This hose 34 is connected with an air-sucking device (not shown) arranged on some conven- The construction of the air-sucking device is immaterial and may be of any known kind. The

printing-machine is further provided with means, of any known construction,which so control the air-sucking device that the latter in the pneumatic frame at a certain moment during each revolution of the printing-cylinder and that this vacuum .is again removed by admitting air at another certain moment- Oiiboth trunnions g of the pneumatic frame two rollers 37 are mounted to'tur n, which are adaptedto roll on the top wings oftwo rods 11, made of angle-iron. The upper ends of by turn the pneumatic siass the two rods 11 are hinged to the two bearings 9, (see Figs-.2 and 5,) while their lower ends are slotted and. guided by two pins 38, engaging in their slots and secured on the machine-frame a. It will be evident that the two rods 1 1 partake in the vertical motion of the two bearings q. On the two trunnions g of the pneumatic frame are further fastened two circular friction-disks 10, (see Fig. 1,) which are embraced by two rings 39, made each in two parts and forming the ends of two rods 15. The latter are pivotally connected with two levers n, turning on the pins w at the machine-frame a. The two. levers n in turn are pivotally connected with the two rods 1) already mentioned above. The respective grooved cam-disks 27, actuating the rods 1;, are so shaped as to move the trunnions gof the pneumatic frame from their normal 'positions in the bearings 1 to their other extreme positions, (marked by g in Fig. 1.) The two bearings g (see Fig. 5) are so hollowed or curved as to allow the trunnions g of the pneu-' matic frame to easily engage in and again get out of the bearings. The top wings of the two rods 1 1 are so cut out near the upper ends (see Figs. 2 and 5) as to enable the two rollers 37 to easily get on them.

The sucking-boxes i i are so formed that their left bottom edges (see Figs. 3 and 6 to 8) are exactly in the axis of the two trunnions. They assume the positions shown at Fig. 6, when their bottoms are lightly pressed on the pile 7c of sheets at the front edge. W'hen a vacuum is produced in the sucking-boxes i i in the manner described above, the uppermost sheet will be sucked and pressed so firmly against the bottoms of the sucking-boxes that on turning the pneumatic frame backward (see Fig. 7) the front edge of the sheet will be turned upward and that on raising and simultaneously turning the pneumatic frame forward (see Fig. 8) the uppermost sheet will be safely detached from the pile 7c. This rocking motion of the pneumatic frame is produced by the forked ends of the two rods 1). On examining Figs. 1, 2, and 3 it will be noticed that'the two projections 25 and 26 011 each rod 1) embrace the boss of the respective end piece h, in which the tube 32 is secured. \lVhen by the respective cam-disks 27- and the parts 8 1 .the rods p are moved from right to left, their forked ends are lowered into the proper positions for engaging the bosses of the end pieces h the moment the pins 24 et from the downwardly-curved parts to the horizont al parts of theslots 23 ,when henceforward the projections 25 will take the bosses of the end pieces h along with them, and thereby turn the pneumatic frame in ackw ard around the axis of the trunnions 9. When the rods p are again moved from left to right-4L. a, forward-their projections 26 will take the bosses of the end pieces h alon with them, and thereame f0 rw ard;

, 4.5 .eral velocity of the pulleys 16 is made like the D last the pins 24 get into the curved parts of the slots 24, the rods p will be thereby raised so much asjto-allow the pneumatic frame to get out of the bearings q, the bosses of its end pieces it moving past the short projections 25. It is also evident that the upward-and-downward motion of the rods p, caused bythe yer o.its end serving as a friction-pawl will take alongwith it the friction wheel n, whe1 e'-- curved parts of the slots 23, will at the same time actuate. the rod 0' and the lever .0, so that during the downward motion of the leby the Hearings 9 will be fed downwardi. e.,

,':loweredthrou h thethickness of one sheet.

Of course the r0 p, connected with the rod. 0,

maybe provided with several holes and also. the lever 0 for adjusting the feed of the bearings g according to the varying thickness of the sheets to be printed. It is evident that thedownward motionof the bearings Q will have no'infiuence upon the correct working therewith, as the two loose arms, 22 will of the friction-wheel 'n, and the pawl enga ing be merely turned a little further on the shaft 21.

Where so preferred, the pneumatic frame may be, arran ed for turning forward thesuckedfront e e ofthe uppermost sheet, as

f is indicated by igs. 9' to 11, whichrequire no further explanation. are then slightly modified, as is clearly-shown at Figs. 9 to 11, and the slots 23 of the rods p are so modified that their curved parts. are on rection to rock the pneumatic frame.

Beneath the inclined table 17 a shaft isthe right, and, further, the cam-disks 27- are so arranged that the rods p are first moved from left to right and then in the oppositedimounted to turn in the: machine-frame a and driven from the shaft (1 by means of two beltpulleys 12 14 and a belt 13. On the shaft 15 are fastened several pulleys 16, which project a little throughcorrespon'd'ing slots. in the inclined table 17 and serve in conjunction with as many rollers 7 for feeding the sheet to the printing-cylinder b. Preferably the periphspeed of the sheet traveling with the pneumatic frame. The rollers 7 are mounted to turn on pins in the forked ends of the levers 6. The other ends of these levers 6 are fastened by means of set-screws on a horizontal shaft 40. The latter isrigidly connected with two v levers 5, which swing around two pins 4 on the upper ends of two adjusting screws 41, secured inthe coversof the belrings ofthe -printing-cylinder b. On the shaft 40 two ---'eslotted segments-3 are fastened, so that all i pthepantsj SAG 6, with the rollers 7, can rock about thelaxis of the two pins 4. The segmerits. 3gare pivotally connected with the two rods'2 by means of adjustable pins 42 engagwing in their slots- The free ends of the sev- .eral levers 6, with the rollers 7 engagebelneath the tube 32 and between the suckingboxes it when the pneumatic frame occupies The. sucking-boxes i its extreme lower position as shown by dotted hnes in Fig.1.. The respectiveftwo cam-1 disks 27 for actuatin the two rods 2 are so arranged as torock t e levers 5' and fi' 'b'ut a little without the levers 6 striking against the tube 32 and-to press the rollers -7 sufliciently' on the pulleys 16 forseizing and feeding the sheet to the printing-cylinder b. The pneumatic sheet-feeding device described sofar. is ,o' erated as follows: -The pile k of sheets. is p aced on the table '1, and

by properly turning the shaft 21 with the aid of a hand-crank (not shown) the two bear ings q are first raised to allow of the pile 7c pass- 7 a ing beneathth'e sucking-boxes i: 'L, and then so adjusted that in the lowest position of the] two 'slidesf the bottoms of the sucking-boxes f i tsu'fiiciently bear on the 'front ed e of the uppermost sheet .(See Fig. 6;) hen the pr nting machine is started. "B the. two

external cam-disks 27. the two s ides f are raised and at the proper morrentlowered, so

that the-sucking-boxes 'L-i bear on the-pile 7r,

when a vacuumis produced in thepneum'atic frame by the air-sucking device. I Now b the respective two cam-disks 27 the two rods pare moved from right to left to turn the pneumatic frame with the front edge of the uppermost sheet backward, Fig. 7. 'Here after the .two'frames f are again raised, and at the same time the two rods p are moved from left to right, so that the pneumatic frame is not only' raised and turned forward to detach the uppermost sheet from the pile 7c, but also at last disengaged from the forked.

ends of the two rods 1). The pneumatic frame is,'however, prevented from turning inadvertently by the friction between its two disks'lO and the rings 39 at the ends of the.

'rods t. fAt thismoment, by the respective two cam-disks 27, the two rodst aremoved from left to right in Fig. a, forward-so as to bring the trunnionsg of the pneumatic a frame down the inclined rods 11 to the other extreme position, as indicated in -dotted lines. by the respective two cam-disks 27 reach beneath the tube 32 and above the front edge of the sheet. At this moment the vacuum is removed from the pneumatic frame by the means controlling the air-sucking device, when the front edge of the sheet will drop on the pulleys 16, and immediately afterward the rollers 7 are pressed on the sheet and the I I O Thus the rollers7, which are raised 4 .Zwith the respective two cam-disks 27, are disrolling sucking-tubes. the rot-165g.

motion of the sucking-holiestt or :(t 1') around, their edges in the a'xisof the pneuinatic frame which will insure the detach- 5 ment of. only the uppermost sheet with perf'ect safety, as the' next lower sheets will be prevented. from following, the uppermost sheet by theffriction between'them, and their front edges. are also prevented from turning the paper, although it may be little; v'lhereffore the speed of the rocking niotion of the pneumatic framejcan be made so large as to enable the feeding device to feed even high speed printing-machines.

I tively moderate speed from the pile 7a to he printing-cylinder b without its front e ge parts of'th'e feeding device receiving too dangerous a speed or too great a live'force, The reason for time is that the pneumatic. frame need only be moved 'th'rougha part ofthe path-of the sheet, whe'reuponit is at once re turned to its initial position, while the rollers- 7 are engaged to seize and carry further the sheetf-It depends'upon-the speed of'the printing-machine through what part of the path of the sheet the-pneumatic frame should .travel; The higher the speed of the printing-machine is the more this part ofthe path .of thejsheet, or, in other words,- the path of I the pneumatic frame, will have-to be reduced to avoidtoo greata liveforce ofthe moving parts. .In cases, however, Where the speed i of the printing-machine is'not so high, the

; pneunn atic frame may be moved through the entire path "of the-"sheet in which case the rollers7,with theparts 6, 40, 5, 4,3, and 2,

pensed with. "In this case a device illustrated at, Fig. 12 is arranged above the print-.

'ing-cylinder I) for seizing the dropping front This'device consists of a edge of the sheet; 'sh aft 43, niounted to turn in suitable bearings (not, shown) on the ,two side parts of the machine-framed -On this shaft 43 one or two w'eighted levers 44 are fastened, which .the'dotted lines, their weightsiefi. resting on some supports. (Not shown.) Several benti -springs 46 are fastened on the shaft 43 andadapted to-engage-beneath 'th'e tube 47 and front edge of the sheet 50 drops, whereupon it will be pressedby the springs. 46 on the in either direction by the naturalstifiness of It is a special advantage that the-sheet be 'ingjfed can betransported at a compar-abending through and-without the moving thevertical motion ofsaid two open bear ings, anmchned tablehmged tosamtwo open normallya'ssume the position indicated by between. the sucking-boxes 48 of the p'neu printing cylinder, which by its well-known means seizes and carriesfwith it the sheet.

For adjusting the. pneumatic-device to the varying widthrxf the sheets to be printed its several sucking-hottest t are preferably provided with, cocks 51 51 Fig. 2, similar to those, 49', in Fig. 12. Then either externalsuckvbored can be disconnected fronithetube 32 should it be required by the smaller width-of The pneumatic sheetfeedingdevice can be adapted to any' rdinary printing-machine.

'It can be varied in many respects Without deviating from the spirit of my invention. The

sucking boxes of the pneumatic frame may have the shape of those 48. (Shown at Fi 12 What I claim as my invention, and esire tosecure by Letters Patent, is I i 1. Ina pneumatic sheet feeding device for printing-machines,.the combination with a horizontal tube providedwith a' plurality of dependent boxes for sucking theju perniost sheet, said horizontal tube being a apted to turn on the edges of the sucki'ng-boxes-in an axis parallel to it, means'for connecting saidhorizontal tube with an air-sucking device, I two 0 en bearings for the apcis of said horizonta tube, means for feeding said two open bearings ,down with reference to the axis through the thickness of one sheet to be printed during each revolution of the printin'g-cylinder, means for moving said two open bearings vertically, means for reciprocating said horizontal'tube around its axis during bearings and adjoining to t-he printing-cylindennsane for moving the-axis of said horizo ntal tube-out of said two open bearings down sa d'mclmed table and vice versa, and

means for seizingthe front edge of the sheet and delivering it to the printing-cylinder.

* 2. Ina pneuniaticsheet-feeding device for printing-machines, the combination with two vertical guides on both sides of the 'macllineframe, two slides moving in saidi two vertical guides and provided each with a vertical screwspindle, means for-moving said two slides up and down, two bearings open on one side and adapted toslide in said twoslides and engaging said two screw-spindles, means forturning said two .screw-spindles,zto feed said ,two bearings downward through the thickness of one sheet to be printed during each rotation of the printing-cylinder, two

trunn-ions adapted to turn in said two bearings'and provided with two arms, ahorizonarms of said two bearings and provided with aplurality of dependent boxes for sucking the front edge of the uppermost sheet, one of said two trunnions and its arm being hollow to communicate with the horizontal tube and the suckingboxes and thepneumatic frame formed thereby being so arranged, that'the ta-l tube secured in the free ends of the two j means for, connecting saidp ieu natic frame position, an 'incliiied table leading'to' the printing-cylinder, two inclined rails hinged at the upper ends to said two bearings and guided at't-he' lowerends by two pins on the machineframe, means for moving the trunnions of saidpneumatic frame when released out of said two bearingsdown said 'two inclined rails and vice versa, and means for seizing the front edge of the sheet released by said sncking boxes and delivering it up to the pri'i' 'ting-cylinder.

In a pneumatic sheetdeeding device for printing-machines, the combination with two vertical guides on'bot'h sides of the macliine franfie' at'the front ofithe sheet-piling table, two slides moving iii. said two vertical guides 'and'provi'ded each Jtvith an arm and a vertical screw-spindle with a bevel-wheel on Y two bearings open on one side and adapted toslide insaid two slides and engaging said two scre spindl'es, a horizontal shaft mounted to turn in thearms of said two slides, two bevel-wheels on said horizontal shaft] and engaging in the two bevel-wheels on said two screw-spindles, a friction-wheel on said horizontal' shaft, means for moving said friction-wheel to' feed said two bearings suck downward through thethickness of one sheet to be printed during each' rotation of the printing-cylinder, a pneumatic frame formed of-two .trunnions'adapted to turn in said two bearings, two arms connected with these trunnions, a horizontal tube secured in the free ends of these two arms and a plurality of dependent boxes integral with the horizontal tube, said dependent boxes being adapted to the uppermost sheet and aving their bottom edges on one side in the pneumatic frame, the one trunnion and arm of said pneumatic frame being hollow to communicate with the horizontal tube. means for connecting the hollow trunnion of said pn eurnatic frame with an air-suckin device, two

bell-crank levers mounted to roc on said two slides, two horizontal rods pivotally connected with the upper arms of said two bell-crank levers and provided on the front ends each with a slotand two dependent projections, the dependent projections of said two horizontal rods being adapted to'engage the horizontal tube of said pneumatic frame and thereby to rock the latter, said two bearings being provided with two pins engaging in. the,

slots of said two horizontal rods for so guid-r' ing them, that in their one extreme position they release said pneumatic frame, an inclined table leading from the sheet-piling t a.-: ble to the printing-cylinder, two inclined rails v l and guided at clined table, a rocking the printing-cylinder to turn on two pinsfat of the machine-frame, means said rockingframe andthe .side parts axis of the hinged at the up; er ends to said two bearings the lower ends by twopins on the machine-frame, a horizontal pulleyfsh aft mounted to turn in the machine franie be math said inclined table, a plurality of pulleys fastened 011 said horizontal pulley-shaft and just projecting through slots in said inframe mounted above mounted to turn in adapted to work with said pulleys for seizing the sheet and moving it to the prin ting-cy'lim der, two friction-disks on the trunnion's-of I,

said pneumatic frame, two eyed rods adapted to embrace with their'eyed ends said two,

friction-disks, two rear levers mounted to swingon pins at the machine-frame and pivotally connected at their free ends with said two eyed rods, a lower shaft mounted to turn in the machine fraineand driven at the same rate as, the printing-cylinder, means for transmitting the rotation from said lower shaft"to"said horizontal pulley-shaft, meansl.

fastened on said lower shaft of themaehine.

a plurality-of radial rods engaging at their].

lower ends the means fastened to said lower shaft, the upper ends of said radial rods being pivotally connected with. saidtwo rear levers,

said two slides, said rocking frame and the lower arms of said-two bellcrank levers respectively.

'4. "In apneumatic sheet-feeding device for printing-machines, the combination with a horizontal tube provided with a plurality of dependent boxes for sucking the uppermost sheet, said horizontal tube being adapted to turn on the edges of the sucking-boxes in an axis parallel to it, means for connecting said horizontal tube with an air-sucking device, two open bearings for the axis of said hori zontal tube, means for feeding said two open bearings down through the thickness. of one sheet to be printed during each revolution of the printing-cylinder, means for moving said two open bearings vertically, means for reciprocating said horizontal tube around its axis during the vertical motion of said two openbearings, and means for engaging and transferring each sheet to printing mechanism.

5; In a pneumatic sheet-feeding device for printing-ma'chines, the combination with two vertical guides on both sides of the Ina-chin eframe, two slides moving in said two vertical guides and provided each with a vertical screw-spindle, means for moving said two "ISO said pneumatic frame with an air-sucking device, means for rocking said pneumatic ings and provided with two ar1ns,'a horizonl I name during the vertical motion of said two slides and releasing same in the one extreme position, and means for engaging and transferring each sheet to printing mechanism.

6. In a pneumatic sheet-feeding device for printing-machines, the combination with two vertical guides on both sides of the machineframe at the front of the sheet-piling'table, two slides moving in said two vertical guides and provided each with an arm and vertical screw-spindle with a hevohwheel on the upper end, two bearings open on one side and adapted to slide in said two slides and engaglng said two screw-spindles, a horizontal shaft mounted to turn in the arms of said two slides, two bevel-wheels on said horizontal shaft and engaging in the two bevel-wheels on said two screw-spindles, friction-wheel on said horizontal shaft, means for moving said friction-wheel to feed said two bearings downward throughthe thickness of one sheet to be printed during each rotation of the printing-cylinder, a pneumatic frame formed of two trunnions adapted to turn in said two bearings, two arms connected with these trunnions, a horizontal tube secured in the free ends of these two arms and a plurality of dependent boxes integral with the horizontal tube, said dependent boxes being adapted to suck the uppermost sheet and having their bottom edges on one side in the axis of the pneumatic'frarne, the one trunnion and arm of said pneumatic frame being hollow to comnniuic'ate with the horizontal tube, means for connecting the hollow trunnion of said pneumatic frame with'a'n air-sucking device, two bell-crank levers mounted to rock on said two slides, two horizontal rods pivotally connected with the upper arms of said two bell crank levers and provided on the front ends each with a; slot and two dependent projections, the dependent projections of said two horizontal rods being adapted to engage the horizontal tube ofsaid pneumatic frame and thereby to rock the latter, said two bearings being provided with two pins engaging in the slots of said two horizontal rods for so guiding;- them, that in their one extreme positionthey release said pneumatic frame, and means for engaging and feeding each sheet to printing mechanism.

ln testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. GUSTA 7 KLEIM.

WVitnesses:

WILLY Foorrr'rno. RUDOLPH FRroKn. 

